Type-writing machine.



A. J. BRIGGS.

TYPE WRITiNG MACHINE.

APPLlcATIoN man 0m22.191s.

A .I BRIGGS TYPE WRITING MACHINE'.

APPLscATloN FILED DEC 22 1915 Patented July 24, 191?. 2 SHEETS-SHEET 2.

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WITNEEEEE QQ/WM 1 TED `ARTHUR J. BBIGGS, OF SYRACUSE, NEW YORK, .ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, vNEW YORK, A CORPORATION OF NEW YORK.

` TYPE-WRITING MACHINE.

Specification of Letters Patent.

Patented .iuiy 2a, i917.

Application filed December 22, 1916. Serial No. 138,475.

To all whom t may concern:

Be it known that I, An'riiUR J. Barcos, citizen of the United States, and resident of Syracuse, in the county of Onondaga and ltate of Newl York, have invented certain new and useful Improvements in Type- Writing Machines, of which the following is a specification;

My invention relates to typewriting machines. and'inore particularly to the combination with the line spacing wheel and platen ofilclutch-iiechanisin by which the platen and line spacing wheel maybe positively connected to rotate together, or the clutch may be released and the platen returned independently of the line spacing Wheel. K

My invention is directed more particularly to the type of platen clutch mechanisin disclosed in the patents to Hubbard N. Josleyn, No. 945,956, dated January 12, 1910, and AfW. Smith, No. 860,834, dated July 23, 1907, and in which the line spacing wheel and platen may be positively connected at any point i-n the relative rotation between the two without displacing either of said members in eectingsaid connection.

One of the main objects of my invention, generally stated, is to provide a compara.'- tively simple, strong and highly eilicient y platen clutch mechanism of the character v specified.

A further object of my invention is to provide -a platen* clutch of the character specified, which may be readily embodied in existing machines, such, for example; as the No. 20Yost machine, without modifying, or materially modifying, the structural features of suchmacliines as they no w exist.

l To the above and other ends which will hereinafter appear my invention consists of ythe features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed' yout in the appended claims. I

In the accompanying drawings, wherein like reference characters indicate corresponding parts in the dierent views,

Figure 1 is an enlarged detail longitudinal sectional view taken centrally through the platen.

Fig. 2 is van enlarged detail fragmentary sectional view ,of a ineniber of the righthand platen liad and some of the asso- `cam 35 in end View.

.end portion. of the platen and Fig. 5 is an enlarged detail transversel sectional view taken on the line 'y-/ of Fig. 1 and looking in the direction of the arrows at said line, but showing the floating Fig. 6 is an enlarged detail fragmentary longitudinal sectional view corresponding to Fig. l but showing only the right-hand the clutch locked inthe released position.

Fig. 7 is an enlarged detail perspective view of one of the engaging pawls.

Fig. 8 is an enlarged detail fragmentary sectional View of the line spacing wheel.

Fig. 9 is an enlarged detail perspective head.

The platen, designated aa whole by the reference numeral l, is of thel usual conview of a member of the right-hand platen struction and is mounted in the usual manner in the ordinary divided bearings 2 ofthe No. 20 Yost platen frame, details ofV the bearing, omitted. In this construction, a rubber sheath 3 surrounds a metal ,cylinder 4 secured to the left-hand platen head 5 by headed 'screws 6. The heads of ,these screws pass into openings in a ring 7 which surrounds the cylinder 4 at one end and abuts an end of the rubber sheath 8. VThe ring is held in position by the he some of the however, being ds of the screws 6 and prevents a displacement of the sheath along the cylinder 4 in one direction. The'A rightehand platen head is secured to theplaten in a like manner, and correspondin parts are designated by lcorresponding re erence numerals. The hub of the left-hand platen head has a bearing member 8 'received in the left-hand divided bearing 2,

vor-in a suitable bushing contained therein.

A circumferential collar'or flange l9 on the hub takes against the ,bearing or its busliing. The part 8 is interiorly threaded to receive a screw l0 upon the shouldered spindie of the left-hand linger Wheel, the spin dle and finger wheel being iixedly connected,4

to the hub of the. head by rsetscre'ws 11.

vThe right-handplaten head may-be said to comprise two members, one of which is the member showinin detail inv Fig. 9 and is designated as a whole by the reference -numeral 12. This member is iixedly secured to the vplaten by: screws 6 which are received intapped openings. 13 inopposite sides of the cylindrical body portion 14 of the member 12. A circular flange 15 formed on the member 12 extends beyond the associated end oi the cylinder 4, and bears against the same. The other member of the right-hand platen head is designated as a whole by the reference numeral' 16, and is igtedly secured rto the member 12 by headed screws 17 which take into tapped openings 18l in the member 12. f ',lheftnember or section ,16 has a centrallyI arranged disk-like :bearing portion 19 thatuis, received within it flange ,2O projectinj'g from the end iof the nieinberj12, and bears against the end faces 21 ,of the member 12. a

la liney spacing wheel, designated as a 5 whole hy, the rference numeral 22, is in .the for `teeth bear against the flange 15. manner the line' spacing wheel is mounted m" of a ,ring and is -provided at one end with" ine spacing teeth 23, and with peripheral 'teeth 24 for coperation With the usual platen detent. Inwardly extending wedge-shaped clutch teeth 25 project from the wheel beyond the bodyportion 26 thereof. The end or edge 27 o'tlieline spacing wheel bears against the outer face of the fiange 15 o n the member 12, whereas the body portion `2,6 of the wheel receives a bearing on the periphery 28 of the member 16.'y This 'brings the line of clutchteeth 25 outside of theflange 20 and withinl he space 29 in the member 16, so that the outer ends or' the clutch ,teeth bear at 30 against thenieinber I.16, andxthe inner ends of the clutch In .this

on the right-hand platen head for relative rotative movement, but the wheel ispreventf ed from endwise displacement on thehead except when the member 16 is detached.

.being shown in the present instance.

The member or section 12 is formed with radial ways or channels 31, three such ways In each of these ways is fitted a pawl or engaging member, designated as a whole'by thel reference numeral 32, and shown in detail in Fig. 7. When the member 16 is secured in place on the member' 1:2 each way 31 is closed on four sides and is rectangularh in cross sectionl and open at its ends. The body portion oi each pawl is rectangular in cross section, conforming to thecross section of the wa y in which it is received. Each paw] is thus confined aga'nstlateral movement in way, but is free ,to move therein radially oi the platen into and out of engagement with the clutch teet-h`25 on the line spacing The engaging'end, or tooth, 33 of i's wedgeeshaped in cross section,

wheel. each pawl conforming to the spaces between the clutch l teeth Each pawl is *also formed within the external dimensions thereof with a cam cam, or wedge-shaped member 35 co-acts directly with .the inner ends of all three pawls 32, to control the movements of the latter into and out of engagement `with the clutch'teeth 25. llhis cam is received in a central opening or channel 36 in the member 12, the diameter of the opening being greater than the cam at the thickest part of thevlatter, so that the cani is capable of receiving a movement transversely or the platen, as well as'- longitudinally thereof. For this reason refer herein to this member 35 las a Floating cam to distinguish it from a cam which is movable in but one of said directions, and is guided and held against movement in the other direction. The opening 36 extends into an extension 37 formed on the member 12, and the coiled' expansion spring 38 is received in saidopening'. One end of this 'spring bears against the bottom wall l39 of the opening;

and the other end of the spring bears against the base yof the conical cani. The force of this spring is exertedto move the cam outc wardly, and to wedge or cani thepawls into `engagement with the clutch teeth 25', and

spacing wheelon the Iline spacing wheel; 'that there are three pawls 32 spaced at equal distances apart and which engage these teeth 25; and that the angular distance 'from the point of the.tooth 33 on one pawl to either of the others, is not edua'l tothe angular distance occupied by any whole number, of the 'teeth 'It= follows therefore, that no matter what the relative rotative adjustment be` tween the platen and line spacingwlieel a'y be, a positive connection may be eifecte "between said rotative Vsplacenien'tbetween them. It also follows that one of the three pawls will engage its toot-i125 on the opposite side from that of. the tooth 25 engaged by another of said pawls, so that relative rotative movement between the line spacing wheel and platen in either direction is prevented. Moreover, in a construction of this character all three pawls 32 will never engage the teeth 25 to the same depth. All' of' thisA is well understood in the art and further ex planation thereof herein is 4deemed` unneces` sary.

parts without effecting a relative 'f 1,234,274 y :wir

that all three pawls never engage the teeth 25 .o the same depth, and that at different times each pawl may receive a greater or less depth of engagement, it is necessary for the floating cam to move transversely of the platen in different directions, as well as to move longitudinally of the platen. This is necessary in order that the cam 35 may maintain its coperative relation with all the pawls in their movements variable distances from the axis of the platen.

I have provided hand actuated means cooperative with the floating cam for releasing the clutch, in order that the platen may rotate dto any desired extent independently of the platen, and also have provided means for positively withdrawing the pawls from engagement with the clutch teeth, as well as means operable at will for locking the parts indeiinitely in the releasing position, all of which means will now be described.

The section 16 of the right-hand platen head has a hub formed with' a circumferential bearing groove 41 which receives the two-part bearing 2 at the right-hand end of the platen frame, and thus forms a. support for the right-hand end of the platen. This huh has a cylindrical opening 42 which extends longitudinally of and co-axially with the platen, and in register' with the opening 36 in which the floating cam 35 is received. The right-hand finger wheel'43 has a hollow spindle or stem 44, received at its inner end in the opening 42. A shoulder 45 on the spindle abuts the outer end of the hub 40, and limits4 the inward movement of the spindle inthe hub. Set screws 46 are received in tapped openings in the hub 40 and bearv at their inner ends in depressions 47 (Fig. 4) inthe spindle 44, thus xedly connectmg the finger wheel 43 to the platen.

The hollow spindle 44 is formed at its inner end portion, and on diametrically opposite sides thereohwith longitudinally extending slots 48. Projections 49 extend from the inner end of the spindle on opposite sides of the bore therein. Each projection has one face 50 which is in the same plane as a side wall of the associate slot 48.

hand-actuated releasing member or 'spindle 51 extends co-axially with the platen, and is movable longitudinally thereof and rotatively in the bore of the hollow spindle 44. The outer end of the spindle 51 is provided with afinger wheel, nger piece or button 52 by which it may be manipulated. Oppositely disposed pins 53 project laterally from the spindle 51, and are received in theslots 48 when the parts are disposedas represented in Figs. 1, 2 and 3. When, however, inward pressure is exerted on the finger wheel orbutton 52 an inward long'itudinal movement of the spindle 51 will displace said pins from the slots 48, Amoving them to the position represented in and then only to the extent dotted lines in Fig. 2. If it is desired to lock the releasing spindle 5l in the inward or releasing position to which it has heen moved, it is merely necessary to give the linger wheel 52 a quarter turn; bringing the pins into the position shown in Fig. 6, and in dotted lines in Fig, 3. From a consideration of these figures, and Fig. 2, it will be understood that when the parts are moved to releasing position, shown in dotted lines in Fig. 2, the projections 49 will permit the spindle 51 to be turned in but one direction,

ter turn, or until the pins 53 vco-act with the projections 49 at the sides or edges 54 thereof. limit the rotative movement of the spindle. At this time the pins rest on the endl55 of the hollow sleeve or spindle 44, and prevent an outward or return movement of the releasingvmember 51 until it is again turned to a position to bring the pins against the faces 50, and in register with the slots 48.

The` inner end of the spindle 51 bears against a releasing member 56. This member is cylindrical in form and fits and isf guided in the opening 42, and is limited in its outward movement by the projections 49. The inner end of this member 56 is formed with a conical internal cam face 57 which, as'

Figs. l and 6, co-acts with the cams 34 on all of the pawls 32. The member 56-57 constitutes a cup-shaped cam which. positively withdraws the pawls fromengagement with the clutch teeth 25 when the spindle 51 is moved inwardly to the position shown in Fig. 6. The member 56 also receives the apex of the conical controlling cam 35, an'd the inward movement of the member 56 effects a corresponding movementof the member against the force of The projections 49 thus act as stops to of about a .quar- .'95 will be understood from a consideration of the spring 3S. This withdrawal of the' cam.p

35 enables the pawls to be withdrawn inwardly, by the action of the cam 57.r thereon. It will be understood that in the mo 'ement of the cam to the locking position, the member 56 in its coperation therewith Will not interfere with the lateral movement of the cam with the pawls to a position where the cam is olii-centered with reference to the axis of the platen. This olf-centering of the cam 35 is shown in Fig. 5.

Additional means are provided for effecting a tie between the two platen heads on the line of the axis of the platen, as is usual in the No. 20 Yost machine. Thus, a headed tie rod 58 is introduced through an opening 59 in the left-hand head, and this tie rod` is threaded at its inner end, 'as at 60, for engagement in a tapped opening in ltlhedextension 37 of vthe right-hand platen From the foregoing description it will be understood that the clutch may be tempo- `pressiire on thebutton and the parts controlled thereby will. be returned to the normal position by thesingile spring 38, and an eective engagemert ot vthe clutch to connect the line spacing wheel and platen will be brought about.- lthonld the operen tor desire to lock the clutch released and maintain it released indefinitely, it is merely necessary to' turn the linger'h wheel or button 52 after it has been moved to the releasing` position, in the inann er hereinbelfore de scribed. y

llVhat l claim as neiY and desire to secure by Letters Fatent, is I- l. lin a typend-iting1 machine, the combination of a platen; a line spacing Wheel; and clutching` means it'or positively connecting the line spacing` wheel and platen to turn together and for enabling the platen to turn independently et the line spacing; Wheel, said means comprising a et teeth, co-aeting engaging pawls, and a floating cani cooperative -with all of said paivls and operating thereon to force themr into engagement with said teeth.

2. ln a typeWrit-ing machine, the'comhination oit a platen; a line spacing` wheel; and clutchingmeans for positively connecting the line spacing` `Wheel and platen to turn together and for enabling the platen to turn independently of the line spacing Wheel, said means comprising' a series of teetli,.eoaeting pawls.l a floating' cani cooperative with all oi' said pawls and controlling the movements thereof into and out of engagement with said teeth, a single spring which tends to torce the pawls into engagement 1with said teeth through the operation of the cam on said pawls, and hand vcontrolled means for moving said Cain against the force of said spring.-

3. ln a typewriting machine, the combination of a platen; aline spacing wheel;

and clutching means for positively connect?v -ing the line spacing wheel. and platen to turn together and for enabling the platen to turn independently of theeline spacing' wheel, saidgmeans comprising,- a series ot teeth, cti-acting"` engaging pawls, a .centrally disposed Heating member havingl a cam face cope 'ative With all. of said pawls to force them into engagement with said teeth, and a second cam cooperative with all ot' said pan/ls to withdraw them from engagement with said.I teeth and cooperative ivitlrsaid floating member to'move it l. ln a t pewritinf machine the combination of a platen; a line spacing wheel; l 1and cliitchingineans tor positively connect-` incense ing the line .spacing wheel and platen to turn tog ther and for 'enabling the platen to turn independently of the line spacing Wheel, said inans comprising a series of teeth. rio-acting engaging' pawls, a floating nieinlier haring a cani tace cooperative with all o said panls to force thein into engage- 'with said teeth. a second eain cop- `Iwith all oli' said pawls to withdraw n ili'roin engagement with said teeth, serif-ig,` which tends to move the i'loating member in one direction and to cause the pan'ls Ito engage said teeth, and hand. con trolled means icr lireingsaid l'loating ineinber and the second cani in the opposite direction against the torce oit said spring and tor positively disengagjing the pawls from ine sparing' together and l'or enabling)I the platen to turn independently olf the line spacing wheel, said means romprising inwardl)v projecting clutch teeth carried by the line spacing, whee", panls lined to turn with 'the platen but movable radially oi the platen into and 'out of engagement with said clutch teeth, and a roiii'rally disposed l'loai5in ;l wedge co" (narrative with all ot 'said pan'ls and controllino the nioreinents tliei'eoif into and ont Of enianeinent with said clutch teeth.

(3. ln a ty'pcvfriting machine, the conibiiia tion ol`l a platen; a linx spacing` wheel; 'and clutching means for positively connecting the line spacingv wheel and platen to turn together and tor enabling' the platen to turn independently ot' the line spaeiiiki;y wheel, said means coinprisiih acting' engaging pan'ls. a. centrally disposed floating; cani cooperative with all et said panls and controllingv the movements there ot into and out ol engagement with Said teith, a. spring which tends to force the W axially with the platen and is effective to more said cani against thil torce ot its spring to thencleasing position.

7. ln a typewritine' machine, the combination ot a platen; a line spacing'wheel; and clutching .means l'or positively connecting the line spacing wheel and platen to turn together and 'lor enabling the platen to turn independently oi the line spacing wheel, said ineans comprisingr a series ot teeth; `cli-acting engaging"pawls, a floatingr cani coopera-tire with a'll ot said pawls and controlling` the increments thereolinto and out ot engagement with said teeth. a springavhich tends to torce the pawls into engagement through the operation oli theeain on, said pawls7 a hand actuated releasing a series ot teeth, eO-

spindle which ei;1

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` tends co-axially with the platen and is effective to move said cam against the force of its spring to the releasing position, and means operable at will independently of the releasing movement of said spindle for locking the latter in its releasing position.

8. :In a typewriting machine, the combination of a platen; a platen head which carries a hub lixedly connected thereto and received ina bearing in the platen frame and by which the platen is supported at one end in the platen frame; a line spacing wheel carried by and adapted to turn on said platen head; inwardly projecting clutch teeth carried by said line lspacing wheel; a plurality of pawls carried by said platen head and movable radially of the platen `into and out of engagement with said clutehteeth; and means forv controlling the movements of said pavvls into and outof engagement, said means comprising a spindle arrangedco-axially with the platen'and movable through a central opening in said hub`.`.

9. In a typewriting machine, the combination of a platen; a platen head which carries a hub ixedly connected thereto and received in a bearing in the platen frame and by which the platen is supported at one end in the platen frame; a line spacing Wheel carried by and adapted to turn on said platen' head; inwardly projecting clutch teeth carried by said line spacing Wheel;

a plurality of pavvls carried by said platen head and movable radially of the platen'into and out of engagement with said clutch teeth; and means for controlling the movements of said pawls into and out of i engagement, said mean's comprising a spindle arrange eo-axially ewith the platen and movable through a central opening in said hub, and a loating cam coperative with all of said pawls and under control of said spindle.

10. In a typewriting machine, the combination of arplaten; a platen head 'which carriesa hub' fixedly connected thereto and received in a bearing in the platen frame and by which the platen is supported at one end in the platenframe; a line spacing Wheel carried by and adapted to turn `on said platen head; inwardly projecting clutch teeth carried by said line spacing Wheel; a plurality of paWls carried by said platen head and movable radially of the platen into and out of engagement With said clutch teeth; and means for controlling the movements of said paWls into and out of engage` paw/ls, a spring which tends to move said `cam in one direction and iorce the pawls into engagement with the clutch teeth, the

cam being movable in the opposite direction under control of said spindle, and means for locking said spindle in'its actuated or releasing position.

ll. In a typewriting machine, the combination of a platen a platen liead.\vliich carries a hub tixedly connected thereto and received in a bearing in the platen frame and by which the platen is supported at one end in the platen frame; a line spacing Wheel carried by and adapted to turn on said platen head; inwardly projecting clutch teethcarried by said line spacing wheel; a plurality of paWls carried by said platen head and movable radially 'of the platen into and out of engagement with said clutch teeth; and means for controlling the movements of said pawls into and ibut of engagement, said means comprising a spindle arranged co-axially with thelpl'aten and movable through a central operiing in said hub, a floating cam coperative'iwith all of said pawls, a spring which tends 'to move said cam in one direction and force. the paWls .pawl to positively disengage them from the clutci teeth and which is moved to inoperative'position bythe actionoil said spring,

said spindle being operative to shift both of said cams against the force of said spring.

12. In a typewriting machine, the combination of' a platen, a two-part platen head, which receives a direct bearing in the platen frame, a line spacing Wheel mounted to tu rn on said platen head and which is conned thereon between the two parts ofsaid head when they are lixedly connected, radial Ways in one part of said head Which are covered by the other partth eoil when it is secured in place, sliding clu chi pawls which move radially in said Ways, clutch teeth on the line spacing Wheel and `with Which the paWls engage, a single cam eotiaerative directly with all of said pawls, and ".hand controlled With the platen into said "platen head and controls the movement of said cam.

13. In a typewriting machine, the combination of a platen; a-li'ne spacing Wheel; and clutching means for positively connecting the line spacing Wheel and platen to turn together and for enabling the platen to turn independently of the line spacing wheel, said means comprising. a series of teeth, coacting engaging pavvls, a centrally disposed conical cam cooperative With all of said pawls toforce them into engagement with said teeth, a cup-shaped cam cooperative with all of said pawls to positively move them out of engagement With said teeth and coperativc with the conical cam to move' it to releasing position, and hand actuated releasing means cooperative Withsaid cupshaped cam.

Yoperative position and also te engage said dogs and Withdraw them from engagement With saidy line-space Wheel. Y

15. The Combination of a platen, a line space Wheel, a plurality of clogs radiating from the center of saicl platen, a springpressetl univeisal cani. arranged axially of 15 said platen and operating on all said dogs to keep .them normally in engagement with said line space Wheel, and an axially a1'- rangecl manually movable cup-shaped cam arranged to move the universal cam out ,fof` operative posltlon and also to engage said clogs and withdraw them from' engagement with said line-space ,'Wheel. l

Signed at Syracuse, in the county of @nL ondaga and State 0f New York, this 12th clay of December, A. D. 1916.

' ARTHUR- J. BRGGS,

Witnesses: f

J. F. KERRINS, J1". GERTRUDE TYRRELL. 

